<html>
<head><title>jQuery Open on image button</title>
<link rel="stylesheet" href="ui.all.css" type="text/css" media="screen" />

</head>
<body>
<form>
	<input id="date" type="textbox"/>
</form>

	<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script> 
	<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.5.3/jquery-ui.min.js"></script>
	<script type="text/javascript">
		$(document).ready(function(){
    			$("#date").datepicker({ showOn: 'button', buttonImageOnly: true, buttonImage: 'images/icon_cal.png' });
  		});
	</script>
</body>
</html>